Power-transmitting device for hand-driven mechanisms.



No. 708,286. l Patented Sept. 2; |902. F. W. WILD, In.

POWER TRANSMITTING DEVICEl FOR HAND DBIVEN NIEGHNISN'IS.`

(Application med lmay e, 1902.,

fNo Model.)

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FREDERICK W'. WILD, JR., OF BALTIMORE, MARYLAND.

POWER-TRANSMITTING DEVICE FOR HAND-DRIVEN MECHANISMS.

SPECIFICATION forming part of Letters Patent No. 708,286, datedSeptember 2, 1902;.

' Application filed May 6.1902. Serial IIo. 106,115. (No model.)

To @ZZ whom, it' may concern:

Be it known that I, FREDERICK XV. IVILD, Jr., of the city of Baltimoreand State of Maryland, have invented certain Improvements inPower-Transmitting Devices forIIand-Driven Machines, of which thefollowing is a specification.

In labeling and other machines which are operated by hand and in whichthe drivingshaft thereof has to be rotated in one direction only theconstant turning of the crankhandie becomes monotonous and irksome, andit is usual for the operator to turn first with one hand and then vwiththe other for relief; butsuch change affords but a partial relief forthe reason that the direction of motion is not altered.

The object of the present invention is therefore the construction of amechanism which is interposed between the crank-handle and thedriving-shaft of the machine -or is applied to some driven portion ofthe machine, whereby the direction of turning of the crank-handle may bereversed without affecting that of the driving-shaft, which will stillrotate as before.

In the description of the said invention which follows reference is madeto the accompanying drawings, forming a part hereof, and in Which-Figure lis an exterior front view of the improved apparatus, and Fig. 2a central Vertical section of the same. Fig. 3 is a section of Fig. 2taken on the irregular dotted line A A and looking in the direction ofthe straight arrow. Figs. 4, 5, 6, and 7 are details of the mechanism,the last named being on an enlarged scale.

Referring now to the drawings, 1 is a spindle adapted for application tothe drivingshaft of the machine to be operated, and itis bored to iitthesaid driving-shaft, which is not shown. The direction of the rotationof lthe said spindle when the same is seen from the front of theapparatus in the present case is the reverse of that ofthe hands of aclock. The bored end of the spindle 1 rotatesv within a bearing formedin one side of a casing :3, and the other rests loosely within the hul;I3 of a spur gear-wheel 4, which hub passes loosely `through and issustained by tlm-side of the said casing. l

20, which is loose on the spindle 5 is a crank-handle fastened in anysuitable manner to the exposed or outer end of the hub 3 of the spurgear-wheel 4. The inner end of the said hub is bored, and into thecavity thereby formed is forced tightly the ring 7, having the internalratchet-teeth 9 and the channel 10, which extends entirely through thehub 3 for a purpose hereinafter described. A face view of the wheel 3 isshown in Fig. 4:.

Seated loosely in a transverse slot 12 in the spindle 1 is a slidingbolt 13, having its ends beveled in the same direction.` This bolt, twoviews of which on an enlarged scale are shown in Fig. 7, has a lengthwhich is slightly less than the distance from the root of one of theratchet-teeth 9 to the circumference of the spindle diametricallyopposite. This construction admits of the one end of the sliding boltbeing-in contact with the root of one of the ratchet-teeth while itsother end is clear of the points of the said teeth. l/Vhen thecrank-handle is turned in the direction indicated by the curved arrow infull lines in Fig. 1, which direction is indicated also by the curvedarrow in full lines in Fig. 3, one end of the sliding bolt 13 is forcedinto locking contact with one of the ratchet-teeth lby the inclinedsurface of another tooth riding over the other end of the said bolt, andthe rotary motion of the spur gear-wheel 4 is therefore communicateddirectly to the spindle through the agency of the sliding bolt 13.Should the crank-handle be turned in the opposite direction, the slidingbolt 13 becomes inoperative and ceases to be a driver, and should noother mechanism be employed the spindle would remain stationary. i

I will now describe the mechanism whereby in the backward rotation ofthe crank-handle or that in the direction indicated by the dotted curvedarrows in Figs. 1 and 3 the spindle 1 is caused to continue its rotationin the same direction or that before specified.

15 is a fixed shaft secured to the casing 2 in any appropriate mannerand preferably by means of screws 16. On this shaft'is the loose spurgear-wheel 17, in mesh with the one 4 and also the loose spur gear-wheel19, whichis locked to the one 17 and imparts rotary motionlo thecorresponding gear-wheel 1, through IOO the medium of the idlegear-wheel 21, which rotates about the stud 23, projecting inward fromthe side of the casing 2. The spur gear-wheel 2O is provided with a ring24 like the one 7, having the ratchet-teeth 25 similar to the ones 9.

27 is a bolt with beveled ends, which like the one 13 slides in a slotin the spindle 1, and its position relatively to the ratchetteeth 25Within the wheel 20 is the same as that of the one 13 to the teeth 9within the wheel 4.

Fig. 5 is an exterior view of the spindle l, showing the slots for thebolts 13 and 27, and Fig. 6 is a cross-section of Fig. 5.

With the construction described when the crank-handle is reversed ormoved in the direction indicated by the dotted curved arrows thegear-wheel 2O is caused to rotate in an opposite direction to that ofthe crankhandle (or in the direction first described with respect to thespindle) through the medium of the sliding bolt 27, the other bolt atthe time being inoperative.

For convenience in putting together and taking apart the apparatus thecasing, which serves to protect the mechanism from dirt, is made in twoparts or sections held t0- gether by screws, and the said casing isprovided with a lug 30, whereby it is supported from some xed device,which may be a part of the machine to which the apparatus is applied.

The slot 10, before referred to as extending radially from the interiorof the hub 3 of the gear-wheel 4 and longitudinally the full length ofthe hub, including the ring 7, is to allow of the withdrawal of the saidWheel from the spindle l when the two sections of the casing areseparated, theV projecting end of the sliding bolt 13 passing throughthe said channel.

I claim as my invention- In a power-transmitting mechanism for thepurpose described, a spindle which has to be rotated in a certaindirection, a gear-wheel loose on the said spindle and to which power isapplied, a ratchet mechanism constructed to transmit rotary movementfrom the said gear-wheel to the spindle when the said gear- Vwheel isrotated in one direction only, or that to be taken by the spindle, asecond gear- Wheel loose on the said spindle with ratchet mechanismwhich in etect is the same as the iirst, combined with a train ofgearing driven from the first gear-wheel, whereby in the reversal indirection of the first gear-Wheel, the second gear-Wheel is caused torotate in an opposite direction to that ot' the first, therebycontinuing the rotation of the spindle in the first-described andrequired direction, substantially as specified.

FREDERICK NV. VILD, JR. Witnesses:

OREGON MILTON DENNIS, EsTEP T. GOTT.

